/* 基本样式 */

/* 设置页面背景色 */
body {
  background-color: #f5f5f5;
}

/* 移除默认外边距和内边距 */
html, body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, dl, dt, dd, pre, form, fieldset, input, textarea, blockquote {
  margin: 0;
  padding: 0;
}

/* 设置默认字体和字号 */
body {
  font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.5;
}

/* 链接样式 */
a {
  color: #007bff;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* 标题样式 */
h1, h2, h3, h4, h5, h6 {
  font-weight: bold;
  line-height: 1.2;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

/* 表格样式 */
table {
  border-collapse: collapse;
  width: 100%;
}

th, td {
  border: 1px solid #ccc;
  padding: 0.5rem;
}

th {
  background-color: #eee;
}

/* 表单样式 */
input, select, textarea {
  border: 1px solid #ccc;
  padding: 0.5rem;
  font-size: 1rem;
  line-height: 1.5;
  border-radius: 4px;
  width: 100%;
}

textarea {
  height: auto;
}

select[multiple] {
  height: auto;
}

button, input[type="submit"] {
  display: inline-block;
  margin: 0;
  padding: 0.5rem 1rem;
  font-size: 1rem;
  line-height: 1.5;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 4px;
}

button:hover, input[type="submit"]:hover {
  background-color: #0069d9;
  color: #fff;
}
/* 去除有序列表和无序列表的小圆点 */
ul, ol {
  list-style: none;
} 